Ok so I recently remembered a movie from a long time ago and would love to watch it again. The only problem being that I can't remember the title and Google is no hope whatsoever. The plot of the movie is as follows:
Boy is walking and finds a fish that he then takes to his science teacher because it looks really freaky. A little later on the fish bites the prof. and he becomes an alien/monster. The infection spreads to the football team and the girl said boy likes including many other people. They all look the same on the outside but on the inside they are whacked out, and the only way to tell whose who is to snort something (cocaine maybe). Unfortunately I can't remember anything else!
Can someone Help me?

It's called "The Faculty"